Dave Aitel is CEO of Immunity, an offensive security firm that serves many Fortune 500s, major financials and federal agencies. The company provides penetration tests and develops pen-test tools like Canvas, Silica, Innuendo and Swarm. Immunity is a past contractor with DARPA's Cyber Fast Track program.
Prior to founding Immunity in 2002, Aitel served as a "computer scientist" at the NSA and later as a security consultant with @stake. He is also the co-author of The Shellcoder's Handbook and Beginning Python.